:root{--bg:#f4f7fb;--card:#fff;--text:#0f172a;--muted:#64748b;--line:#dbe4ef;--blue:#2f5bea;--soft:#eef5ff}
*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at top left,#e9f2ff 0,#f7f9fc 42%,#fff 100%);color:var(--text)}
.brand-shell{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:40px 18px}.brand-card{width:min(960px,100%);background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:0 28px 80px rgba(15,23,42,.12);border-radius:28px;padding:44px}.brand-badge{display:inline-flex;border-radius:999px;background:#eaf7ef;color:#137b3a;font-weight:800;padding:10px 18px;margin-bottom:22px}.brand-card h1{font-size:44px;line-height:1.1;margin:0 0 18px;font-weight:900;letter-spacing:-.04em}.brand-subtitle{font-size:20px;line-height:1.7;color:#334155;margin:0 0 28px}.brand-panel{background:var(--soft);border:1px solid var(--line);border-radius:20px;padding:22px 24px;margin-bottom:22px}.brand-panel h2{font-size:22px;margin:0 0 10px}.brand-panel p{font-size:17px;line-height:1.8;color:#475569;margin:0}.brand-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.brand-grid div{border:1px solid var(--line);border-radius:18px;padding:18px;background:#fff}.brand-grid strong{display:block;font-size:17px;margin-bottom:8px}.brand-grid span{display:block;color:var(--muted);font-size:15px;line-height:1.7}.brand-footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:28px;padding-top:22px;border-top:1px solid var(--line);color:#64748b;font-size:14px}@media(max-width:760px){.brand-card{padding:30px 22px;border-radius:24px}.brand-card h1{font-size:34px}.brand-subtitle{font-size:17px}.brand-grid{grid-template-columns:1fr}.brand-footer{display:block}.brand-footer span{display:block;margin-top:8px}}